The purpose of this study is to use an Advisory/Automated Adaptive (AAA) Control system for insulin delivery in adults with Type 1 Diabetes (T1DM) in an outpatient setting to evaluate the system's ability to significantly improve blood glucose levels. One component of this study is evaluating if the AAA Control system run on the Diabetes Assistant (DiAs) system can prevent hypoglycemia during and following exercise more efficiently during a 40 hour trial. Another component of this study is evaluating AAA Control overnight only in 5 consecutive overnights. This protocol represents a culmination of prior clinical trials in development of this AAA system and benefits from the synthesis of those components.